> From: Yoshihiro Shimoda
> Sent: Wednesday, June 01, 2016 11:40 AM
>
> Since the commit b1c127ae (usb: host: xhci: plat: make use of new methods
> in xhci_plat_priv) changed the setting timing of xhci->quirks to
Oops, checkpatch.pl said this message should be revised.
So, I will submit v2 patch later.
Best regards,
Yoshihiro Shimoda
> So, this patch fixes the issue using a "quirks" of struct xhci_plat_priv.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> ---
> drivers/usb/host/xhci-plat.c | 12 +++++++++++-
> drivers/usb/host/xhci-plat.h | 1 +
> drivers/usb/host/xhci-rcar.c | 21 ---------------------
> 3 files changed, 12 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
> index 676ea45..7f03608 100644
> --- a/drivers/usb/host/xhci-plat.c
> +++ b/drivers/usb/host/xhci-plat.c
> @@ -57,12 +57,14 @@ static int xhci_priv_init_quirk(struct usb_hcd *hcd)
>
> static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
> {
> + struct xhci_plat_priv *priv = xhci_to_priv(xhci);
> +
> /*
> * As of now platform drivers don't provide MSI support so we ensure
> * here that the generic code does not try to make a pci_dev from our
> * dev struct in order to setup MSI
> */
> - xhci->quirks |= XHCI_PLAT;
> + xhci->quirks |= XHCI_PLAT | priv->quirks;
> }
>
> /* called during probe() after chip reset completes */
> @@ -89,16 +91,24 @@ static const struct xhci_plat_priv xhci_plat_marvell_armada = {
> .init_quirk = xhci_mvebu_mbus_init_quirk,
> };
>
> +/*
> + * On R-Car Gen2 and Gen3, the AC64 bit (bit 0) of HCCPARAMS1 is set to 1.
> + * However, these SoCs don't support 64-bit address memory pointers. So, this
> + * driver clears the AC64 bit of xhci->hcc_params to call
> + * dma_set_coherent_mask(dev, DMA_BIT_MASK(32)) in xhci_gen_setup().
> + */
> static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = {
> .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1,
> .init_quirk = xhci_rcar_init_quirk,
> .plat_start = xhci_rcar_start,
> + .quirks = XHCI_NO_64BIT_SUPPORT,
> };
>
> static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = {
> .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2,
> .init_quirk = xhci_rcar_init_quirk,
> .plat_start = xhci_rcar_start,
> + .quirks = XHCI_NO_64BIT_SUPPORT,
> };
>
> static const struct of_device_id usb_xhci_of_match[] = {
> diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h
> index c652f33..15144c9 100644
> --- a/drivers/usb/host/xhci-plat.h
> +++ b/drivers/usb/host/xhci-plat.h
> @@ -20,5 +20,6 @@ struct xhci_plat_priv {
> unsigned int quirks;
> };
>
> +#define xhci_to_priv(x) ((struct xhci_plat_priv *)(x)->priv)
> #define hcd_to_xhci_priv(h) ((struct xhci_plat_priv *)hcd_to_xhci(h)->priv)
> #endif /* _XHCI_PLAT_H */
> diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c
> index 0e4535e..2617cd7 100644
> --- a/drivers/usb/host/xhci-rcar.c
> +++ b/drivers/usb/host/xhci-rcar.c
> @@ -87,14 +87,6 @@ static int xhci_rcar_is_gen2(struct device *dev)
> of_device_is_compatible(node, "renensas,rcar-gen2-xhci");
> }
>
> -static int xhci_rcar_is_gen3(struct device *dev)
> -{
> - struct device_node *node = dev->of_node;
> -
> - return of_device_is_compatible(node, "renesas,xhci-r8a7795") ||
> - of_device_is_compatible(node, "renesas,rcar-gen3-xhci");
> -}
> -
> void xhci_rcar_start(struct usb_hcd *hcd)
> {
> u32 temp;
> @@ -175,22 +167,9 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd)
> /* This function needs to initialize a "phy" of usb before */
> int xhci_rcar_init_quirk(struct usb_hcd *hcd)
> {
> - struct xhci_hcd *xhci = hcd_to_xhci(hcd);
> -
> /* If hcd->regs is NULL, we don't just call the following function */
> if (!hcd->regs)
> return 0;
>
> - /*
> - * On R-Car Gen2 and Gen3, the AC64 bit (bit 0) of HCCPARAMS1 is set
> - * to 1. However, these SoCs don't support 64-bit address memory
> - * pointers. So, this driver clears the AC64 bit of xhci->hcc_params
> - * to call dma_set_coherent_mask(dev, DMA_BIT_MASK(32)) in
> - * xhci_gen_setup().
> - */
> - if (xhci_rcar_is_gen2(hcd->self.controller) ||
> - xhci_rcar_is_gen3(hcd->self.controller))
> - xhci->quirks |= XHCI_NO_64BIT_SUPPORT;
> -
> return xhci_rcar_download_firmware(hcd);
> }
> --
> 1.9.1
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